Rotating game modes seem to be all about Champ Select
With "URF" just behind us, and "Definitely Not Dominion"(DND) upon us, I feel it's becoming very evident that the Rotating Game modes are becoming solely about champions picked, and less about player skill. If you read the boards on URF weekend, the reigning complaint was there ends up being a small pool of champions that are played nearly every match, and deviating from that pool of champions guaranteed a loss. After playing DND tonight, I'm noticing the same trend. If my team sticks with Sona, Singed, Hecarim, Teemo.... and the other team picks some of the 100 champions outside the small pool, they're going to lose.
I realize everyone is out there to win, and to a lot of people that's what makes it fun. However I think a lot of people feel the Rotating Game Modes become stale very quickly because of the lack of variety in the champions that are viable. Champion specific balancing that only effects the champion in that particular game mode would fix the problem, however I realize that's time consuming.